diff --git a/app/ai-assistant/page.tsx b/app/alma/page.tsx
similarity index 100%
rename from app/ai-assistant/page.tsx
rename to app/alma/page.tsx
diff --git a/app/conference/page.tsx b/app/vision/page.tsx
similarity index 100%
rename from app/conference/page.tsx
rename to app/vision/page.tsx
diff --git a/components/main-nav.tsx b/components/main-nav.tsx
index 15ea61ef..b7b2bf5d 100644
--- a/components/main-nav.tsx
+++ b/components/main-nav.tsx
@@ -248,24 +248,28 @@ export function MainNav() {
               <Clock className='w-5 h-5' />
               <span className="sr-only">TimeTracker</span>
             </Link>
-            <Link href='/calendar' className='text-white/80 hover:text-white'>
+            <Link href='/agenda' className='text-white/80 hover:text-white'>
               <Calendar className='w-5 h-5' />
             </Link>
             <Link href='/notes' className='text-white/80 hover:text-white'>
               <PenLine className='w-5 h-5' />
               <span className="sr-only">Notes</span>
             </Link>
-            <Link href='/mail' className='text-white/80 hover:text-white'>
+            <Link href='/courrier' className='text-white/80 hover:text-white'>
               <Mail className='w-5 h-5' />
               <span className="sr-only">Courrier</span>
             </Link>
-            <Link href='/ai-assistant' className='text-white/80 hover:text-white'>
+            <Link href='/alma' className='text-white/80 hover:text-white'>
               <Robot className='w-5 h-5' />
-              <span className="sr-only">Alma</span>
+              <span className="sr-only">ALMA</span>
             </Link>
-            <Link href='/conference' className='text-white/80 hover:text-white'>
+            <Link href='/vision' className='text-white/80 hover:text-white'>
               <Video className='w-5 h-5' />
-              <span className="sr-only">Conference</span>
+              <span className="sr-only">Vision</span>
+            </Link>
+            <Link href='/observatory' className='text-white/80 hover:text-white'>
+              <Telescope className='w-5 h-5' />
+              <span className="sr-only">Observatory</span>
             </Link>
             <Link href='/radio' className='text-white/80 hover:text-white'>
               <RadioIcon className='w-5 h-5' />